An efficient handoff mechanism in micro-domain

Mobile IP provides a simple and scalable macro mobility solution but lacks the support for fast handoff control in micro-domain. However, the third generation cellular system requires the seamless macro/micro mobility support. A lot of micro-mobility protocols have been proposed to complement the Mobile IP capability by providing the fast, seamless, and local handoff control. Cellular IP also provides the seamless mobility support in limited geographical area. But semi-soft handoff mechanism of Cellular IP produces the packet loss and the duplication problem due to the difference of propagation delay between the new path and the old path. In this paper, we present an efficient handoff mechanism in micro-domain. The proposed handoff mechanism uses the SCD (Suitable Cross Delay) in order to minimize the packet loss and the duplication problem during the handoff. The proposed mechanism is verified by the performance evaluation through the NS-2 Simulation.